US4112172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric imaging member
Assignee: R Q O HOLDING CO Inc
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Filing: 1976-08-27
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Granted: 1978-09-05
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Expires: 1996-08-27
Abstract
Abstract An improved dielectric imaging member comprising a transparent dielectric substrate having a thickness of between about 75 - 175 micrometers, a conductive layer on said substrate and a dielectric material having a thickness of less than about 15 micrometers on said conductive layer. An imaging process is also provided comprising generating an electrostatic latent image on said dielectric imaging member and developing said image by contact with a developer material.
Inventors
- 👤 Herman Burwasser
- 👤 John R. Wyhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:16
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T428/269; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31681; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
An improved dielectric imaging member for receiving electrostatic latent images in the absence of an externally applied voltage so as to provide sharp density images consisting essentially of a transparent resin film substrate, a conductive layer on said substrate, and dielectric resin film in which said dielectric film has a thickness in the range of about 1.4-10 micrometers on said conductive layer for receiving said latent images.
Claim 2
Dependent Claim
67 words
An improved dielectric imaging member for receiving electrostatic latent images in the absence of an externally applied voltage so as to provide sharp density images consisting essentially of a transparent resin film substrate, a conductive layer on said substrate, and dielectric resin film in which said dielectric film has a thickness in the range of about 1.4-10 micrometers on said conductive layer for receiving said latent images.
Claim 3
Dependent Claim
22 words
An improved dielectric imaging member in accordance with claim 1 in which said dielectric film has a thickness of about 4-5 micrometers.
Claim 4
Dependent Claim
16 words
An improved dielectric imaging member in accordance with claim 1 wherein said imaging member is transparent.
Claim 5
Dependent Claim
19 words
An improved dielectric imaging member in accordance with claim 1 wherein said conductive layer is an organic conductive layer.
Claim 6
Dependent Claim
38 words
An improved dielectric imaging member in accordance with claim 1 wherein said substrate had a thickness between about 75-175 micrometers and is selected from the group consisting of polyvinyl acetate, acrylics, styrenated acrylics, polyesters, polyvinyl butyral and polycarbonates.
References Cited (Backward Citations)
US3252830A
Cited
US3619054A
Cited
US3639640A
Cited
US3672930A
Cited
US3997343A
Cited
US4015043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |